@misc{cryptoeprint:2012:653,
    author = {Periklis A. Papakonstantinou and Charles W. Rackoff and Yevgeniy Vahlis},
    title = {How powerful are the DDH hard groups?},
    howpublished = {Cryptology ePrint Archive, Report 2012/653},
    year = {2012},
    url = {http://eprint.iacr.org/2012/653},
}